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FILE - MARCH 19: According to reports March 19, 2015, federal prosecutors have issued a subpoena to look for evidence that New Jersey Gov. Chris Christie retaliated against the Democratic mayor of Jersey City for not endorsing him during his gubernatorial run. TRENTON, NJ - FEBRUARY 24: New Jersey Gov. Chris Christie delivers his budget address for fiscal year 2016 to the Legislature, February 24, 2015 at the Statehouse in Trenton, New Jersey. Christie proposed a budget of $33.8 billion, that did not include new taxes or an increse in school spending. (Photo by Jeff Zelevansky/Getty Images)